You've been sent to an alien planet to clean up the mess made by The Corporation. Unfortunately, no one told you exactly how you'd clean it up. Turns out, it's pretty much the old fashioned way: blowing the heck out of the mutant monsters as they come out of their nest holes after you. Fortunately, you've got plenty of guns and ammo available to you -- plus, the monsters occasionally have some on hand as they bite the dust. Use your mouse to aim and fire, ASDW to move, and E to throw your grenades.